K&F Concept 100x 100mm ND64，Square Neutral Density Gray 6 Stop ND Optical Glass Filters Slim HD Double Side MRC Coating Waterproof & Anti Reflection

【ND Function】K&F Concept ND64 square filter can reduce the light entering your lens by 6 f-stops; Ideal for places where you want to shoot with a large aperture in very bright light, to extend the shooting time, and to shoot foggy flowing water. 【28-Layer Nano Coating】 Multi-layer anti-reflective coting (water repellent/anti-oil/anti-dust/anti-soil/scratch-resistant), can withstand almost any conditions. 【Material】 With only 2mm thickness and 100*100mm size, no colour cast and is made with premium Germany Optics glass. 【Compatibility】 Compatible with EOS 16-35,24-70,Nik 24-70,Nik 70-200 and other 52mm,55mm,58mm,62mm,67mm,72mm,77mm,82mm lens,compatible with Lee Cokin Hitech Singh-Ray and other brand's 2mm filter holder. 【Application】 Ideal for portraits or close-up photography where you want to use a wide aperture to highlight your subject in very bright light, and also to extend the shooting time, such as when you want to photograph foggy running water in a very bright place.